Manages dependencies on other objects.
Trackable objects may have dependencies: other
Trackable objects which should be saved if the object declaring the dependency is saved. A correctly saveable program has a dependency graph such that if changing a global variable affects an object (e.g. changes the behavior of any of its methods) then there is a chain of dependencies from the influenced object to the variable.
Dependency edges have names, and are created implicitly when a
Trackable object is assigned to an attribute of another
Trackable object. For example:
obj = Trackable() obj.v = ResourceVariable(0.)
obj now has a dependency named "v" on a variable.
Trackable objects may specify
Tensors to be saved and restored directly (e.g. a
Variable indicating how to save itself) rather than through dependencies on other objects. See
Trackable._gather_saveables_for_checkpoint for details.
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Code samples licensed under the Apache 2.0 License.